Which Statement About the Blastula Stage Is True

Which statement about the blastula stage is true?

A) When a cell becomes determined, it has differentiated into a specific cell type.
B) A fate map of a blastula indicates what tissues specific blastomeres have formed.
C) Cells in a blastula exhibit extensive movement and interaction.
D) The end result of cleavage is a large number of small differentiated cells.
E) Cells in different regions of a blastula contain different cytoplasmic determinants.